You probably think it asks you to press PS button on the DS4 but no, it asks you to push button on the wheel you have labeled as 'PS' in your configuration. Also remember to have DS4 turned off when you connect it to the PC and to install Logitech drivers.

Hello, i did all the steps as indicated above, everything seems ok but i keep getting "g25 wheel not found (0)". Any suggestions? I downloaded the g25 software and i bought the adapter straight from gimx.